Actual monitors offers one cool feature that would be nice to integrate into display fusion. It would then make this the "end all" solution for great multiple monitor management.

When dragging a window you could designate "zones" for each monitor and drag a window to this zone. It would re-size to this zone automatically. Actual monitors made this a little laggy/not very appealing UI, but it worked. This is great for maximizing the usage of your multiple monitors by also managing multiple windows.